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Firestone Cruz, M; Fischer, B; Patra, J; Kalousek, K; Newton-Taylor, B; Rehm, Jürgen; Tyndall, M (2007). Prevalence and associated factors of Hepatitis C infection (HCV) in a multi-site Canadian population of illicit opioid and other drug users (OPICAN). Canadian Journal of Public Health. Revue Canadienne de Santé Publique, 98(2):130-133.
Fischer, B; Rehm, Jürgen; Patra, J; Firestone Cruz, M (2006). Changes in illicit opioid use profiles across Canada. Canadian Medical Association Journal = Journal de l'Association Medicale Canadienne, 75(11):1385-1387.
Fischer, B; Firestone Cruz, M; Rehm, Jürgen (2006). Illicit opioid use and its key characteristics: A select overview and evidence from a Canadian multi-site cohort of illicit opioid users (OPICAN). Canadian Journal of Psychiatry. Revue Canadienne de Psychiatrie, 51(10):624-634.
Fischer, B; Reimer, J; Firestone Cruz, M; Kalousek, K; Rehm, Jürgen; Heathcote, J (2006). Treatment for hepatitis C virus (HCV) and cannabis use in illicit drug user patients: questions and implications. European Journal of Gastroenterology and Hepatology, 18(10):1039-1042.